A few valuable results have been obtained by making use of the M(?)ssbauer effect in the study of ancient wares. However, rarely is this technique applied to study ancient porcelain. Ru kiln is one of the five famous ...A few valuable results have been obtained by making use of the M(?)ssbauer effect in the study of ancient wares. However, rarely is this technique applied to study ancient porcelain. Ru kiln is one of the five famous kilns (Ru, Jun, Guan, Ge and Ding kilns) made in Chinese Song Dynasty (A. D. 960—1279 ). It has high artistic value but there are only展开更多
为研究仿古建筑钢-混凝土组合框架的抗震性能,以抗震设防烈度7度区的某殿堂式仿古建筑钢-混凝土组合框架为原型,设计了1榀缩尺比为1∶2的仿古建筑钢-混凝土组合框架,并对其进行拟动力试验。分别输入El Centro波、Taft波、兰州波,地震峰...为研究仿古建筑钢-混凝土组合框架的抗震性能,以抗震设防烈度7度区的某殿堂式仿古建筑钢-混凝土组合框架为原型,设计了1榀缩尺比为1∶2的仿古建筑钢-混凝土组合框架,并对其进行拟动力试验。分别输入El Centro波、Taft波、兰州波,地震峰值加速度依次为35 gal (7度多遇地震)、100 gal (7度设防地震)、220 gal (7度罕遇地震)和400 gal,实测了试件的加速度时程曲线、基底剪力-位移滞回曲线、耗能能力和变形性能。研究结果表明:仿古建筑钢-混凝土组合框架具有较好的塑性变形性能,结构的自振频率和动力放大系数随地震加速度的增大而降低。当峰值加速度为400 gal时,试件刚度较35 gal时减小66%。试件的耗能能力随地震加速度的增加而增大,且在各地震波作用下其变化幅度不同,El Centro波作用下最大,兰州波作用下最小。整个结构可满足7度抗震设防要求,具有良好的抗震性能。展开更多
文摘A few valuable results have been obtained by making use of the M(?)ssbauer effect in the study of ancient wares. However, rarely is this technique applied to study ancient porcelain. Ru kiln is one of the five famous kilns (Ru, Jun, Guan, Ge and Ding kilns) made in Chinese Song Dynasty (A. D. 960—1279 ). It has high artistic value but there are only
文摘为研究仿古建筑钢-混凝土组合框架的抗震性能,以抗震设防烈度7度区的某殿堂式仿古建筑钢-混凝土组合框架为原型,设计了1榀缩尺比为1∶2的仿古建筑钢-混凝土组合框架,并对其进行拟动力试验。分别输入El Centro波、Taft波、兰州波,地震峰值加速度依次为35 gal (7度多遇地震)、100 gal (7度设防地震)、220 gal (7度罕遇地震)和400 gal,实测了试件的加速度时程曲线、基底剪力-位移滞回曲线、耗能能力和变形性能。研究结果表明:仿古建筑钢-混凝土组合框架具有较好的塑性变形性能,结构的自振频率和动力放大系数随地震加速度的增大而降低。当峰值加速度为400 gal时,试件刚度较35 gal时减小66%。试件的耗能能力随地震加速度的增加而增大,且在各地震波作用下其变化幅度不同,El Centro波作用下最大,兰州波作用下最小。整个结构可满足7度抗震设防要求,具有良好的抗震性能。